The unsteady flow features of a series of two-dimensional, planar base flows are examined, within a range of low-supersonic Mach numbers in order to gain a better understanding of the effects of compressibility on the organized global dynamics. Particle image velocimetry is used as the primary diagnostic tool in order to characterize the instantaneous near wake behavior, in combination with dat...

We relate the phase separation observed in many crystals with pronounced electron correlations to regions of negative compressibility (NEC). They were found several models describing strong correlations. At low temperatures, these arise near chemical potentials corresponding change ground state site Hamiltonian. The NEC leads system into electron-rich and electron-poor domains. energy released ...

The ultrasonic velocity, density and viscosity of some Schiff bases of 4-amino benzoic acid  were measured in 1,4-dioxane and dimethylformamide at 308.15 K. Various acoustical properties such as isentropic compressibility (ks), Rao’s molar sound function (Rm), the Van der Waals constant (b), molar compressibility (W), inter molecular free len...

The crystal structure of a copper squarate metal-organic framework is fully determined using first principles methods based in density functional theory. compressibility this material studied by optimizing the under different isotropic pressures and uniaxial stresses directed along direction minimum compressibility, [1 0 0]. Under compression, channels become wider 0], leading to negative linea...

Interpreting the cosmological constant as a pressure, whose thermodynamically conjugate variable is a volume, modifies the first law of black hole thermodynamics. Properties of the resulting thermodynamic volume are investigated: the compressibility and the speed of sound of the black hole are derived in the case of non-positive cosmological constant. The adiabatic compressibility vanishes for ...

Starch is a carbohydrate that can be used as binder in pharmaceutical preparations. Paracetamol has poor flowability and compactibility with its crystalline form, it necessary to make granules by wet granulation method starch binder. This study banana peel waste (Musa paradisiaca) source of starch. Three granule formulations (F1, F2, F3) were prepared using the concentrations 5% (F1), 8% (F2), ...

In this paper, results of a free sorting task of 124 different material samples are analysed using multidimensional scaling. The relevant number of dimensions for haptic perception of materials is estimated to be 4. In addition, the haptic material space is calibrated by means of physical measurements of compressibility and roughness. The relation between objective and perceived compressibility...

Total compressibility in a fractured reservoir is estimated using the pressure response due to gravitational potential variations. Both the lunar and the solar gravitational potentials are fully accounted for by inclusion of longer-period components. The semidiurnal and diurnal pressure data show substantial long-term variations. The gravitational potential also contains the same variation tren...